Accounts and Other Receivables, Net - Components of Accounts and Other Receivables (Detail) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Trade accounts receivable:
VAT and other receivables	$ 17.6	$ 32.7
Refundable income taxes	1.0	5.7
Accrued insurance recovery related to litigation	0.0	15.0
Allowance for doubtful accounts	(2.1)	(1.3)
Total	367.4	352.6
Trade Accounts Receivable | Kronos Worldwide, Inc.
Trade accounts receivable:
Accounts receivable	333.9	273.3
Trade Accounts Receivable | CompX
Trade accounts receivable:
Accounts receivable	13.5	12.2
Trade Accounts Receivable | BMI and LandWell
Trade accounts receivable:
Accounts receivable	1.1	1.5
Contran | Trade Items
Trade accounts receivable:
Receivable from affiliates	0.4	0.5
LPC | Trade Items
Trade accounts receivable:
Receivable from affiliates		10.2
Other | Trade Items
Trade accounts receivable:
Receivable from affiliates	$ 2.0	$ 2.8